diff --git a/app.py b/app.py
index 3649491..8c83186 100644
--- a/app.py
+++ b/app.py
@@ -208,7 +208,16 @@ def grade_speaking_task_1():
             os.remove(sound_file_name)
             return response
         else:
-            raise Exception("The audio recorded does not contain any english words.")
+            return {
+                "comment": "The audio recorded does not contain any english words.",
+                "overall": 0,
+                "task_response": {
+                    "Fluency and Coherence": 0,
+                    "Lexical Resource": 0,
+                    "Grammatical Range and Accuracy": 0,
+                    "Pronunciation": 0
+                }
+            }
     except Exception as e:
         os.remove(sound_file_name)
         return str(e), 400
@@ -247,7 +256,16 @@ def grade_speaking_task_2():
             os.remove(sound_file_name)
             return response
         else:
-            raise Exception("The audio recorded does not contain any english words.")
+            return {
+                "comment": "The audio recorded does not contain any english words.",
+                "overall": 0,
+                "task_response": {
+                    "Fluency and Coherence": 0,
+                    "Lexical Resource": 0,
+                    "Grammatical Range and Accuracy": 0,
+                    "Pronunciation": 0
+                }
+            }
     except Exception as e:
         os.remove(sound_file_name)
         return str(e), 400